There's no better way to inspire developers as showing how other software handles specific features. It should not be a full demo of his software works, but a demo of a specific feature you think should fit in Blender nicely.

Take your laptop, or make sure one of our demo stations has the software installed. A lot of 3d packages have free demo versions anyway.

I think it would be great to show the procedure plan of gSculpt in combination with the procedure primitive.
Additionally the overall ease of use of its modeling tools could be an inspiration to Blender coders. It is open source and it's more and more stable:http://gsculpt.sourceforge.net/